package com.wl.api.filter.autentication;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletResponse;

import com.wl.api.common.utils.StringUtil;


public class SimpleCORSFilter implements Filter {
	private String accessDomain;
	
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
    	accessDomain = filterConfig.getInitParameter("accessDomain");     
    }
    
	public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
	    HttpServletResponse response = (HttpServletResponse) res;
	    response.setHeader("Access-Control-Allow-Origin", StringUtil.isBlank(accessDomain)?"*":accessDomain);
	    response.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE, PUT");
	    response.setHeader("Access-Control-Max-Age", "3600");
	    response.setHeader("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
//	    response.setHeader("Access-Control-Allow-Headers", "X-Requested-With");
	    chain.doFilter(req, res);
	}

  	public void destroy() {}
}
